Universal joint



S. G- WINGQUIST UNIVERSAL JOINT June 2, 1953 2 Sheets-Sheet 1 Filed June 23, 1950 ZSnventor:

a ttornegs.

5 J 1953 s. G. WINGQUIST 2,

UNIVERSAL JOINT (Ittornegs Patentecl June 2, 1 953 UNITED STATES PATENT OFFICE I fUNIVE ItSAL JOINT Sven Gustaf Wingqixist, Gothenburg, Sweden Application June 23 1950, Serial No. 169,864 in'sweai'iugua 16, 1949.

The invention relates objectof the invention isto (provide means in such joints for taking up any pressure andpull acting on the joint in an axial direction.

Three embodiments of theinvention are described in the following with reference to the accompanying drawings. In these Figs. 1" and'2 show the first, Figs. 3 and 4 the second and Figs... 5 and 6 the third embodiment. Figs. 1, 3 al ld 5,

show axial sections and Figs. 2, 4 and 'GJtransverse sections as indicated by the section line's; Parts having the same function are in the various.

modifications denoted by I, la, lb and so on. In Figs. 1 and2 the driving jointv memberis denoted by l and the driven joint memberbyli each having four arms 3. The arms have races.

4 between which are disposed rollers 5.

-The joint member i has an outer spherical".

surface 6 and an inner spherical surface 7 having a common centre at the point 8 onfthe axis of the.

joint member I. Similarly the joint member 2 has an outer spherical. surface 9 and an inner' spherical surface In having a common centre at the point II on the axis of the jointmember, 2. The two centres 8 and. II are separate from each other. In this embodiment each point ,8, ll ison the same side of a transverse plane through the centre of the joint (II-'-II in Fig. 1) as the spheri cal surfaces 6, 1 and 9, [0 respectively for which they are the centre. The two inner spherical surfaces 1, II], in the embodiment shown, are formed on members I2, I 3 mounted, in recesses I4, IS in the joint members. I I

The joint members are surrounded by an outer bisecting member [5. The bisecting member comprises'a' cylindrical member l1 and two end plates I8, H) which by means of flange nuts 20, 21 are secured to the cylindrical member. The cylindrical member H on the inside has cylindrical surfaces 22, 25 by means of which it engages with spherical surfaces 2 3, 25 on the joint members havin their centres at the points 8 and II respectively. The end plates have spherical surfaces 26, 21 engaging with the spherical surfaces 6, 9 on the joint members. The rollers 5 are mounted in a grove 28 in the cylindrical member l1.

The member it holds the joint members together against pull in the axial direction thereof.

Within the joint is mounted an inner bisecting member 29 having substantially the shape of a double concave lens and having spherical surfaces 30, 3| engaging with the spherical surfaces 1, H) on the joint members. The rollers 5 are mounted in a groove 32 in the inner bisecting member.

to universal joints. one

7 ing plane of the joint.

The inner bisecting member takes up pressure acting on the joint in the axial direction thereof. The.;rollers 5 are thus mounted both in an outer and in an inner bisecting member. In this waythe two bisecting members form a unit which when turning in the plane of the paper inFig. 1 behaves as a rigid body. If the centres 8 and; l l are symmetrically disposed relatively to the transverse centre plane of the joint (II-II in Fig. 1) then this unit, when the joint members are deflected relatively to each other, will be guided in such manner that the common. centre plane of the rollers will always be in the bisect- When the joint members are deflected relatively to each other the bisect ing members are displaced in such manner that their centres no longer coincide with the point of intersection between the axes of the joint members. As,the twobi'secting members turn about. spherical surfaces having common centres 8 and they copy each others movements, so that when the, joint members are deflected relatively to each other the said radial displacement is the same in respect of both and in the same direction.

' The rollers take part in this radial displacement and therefore, at the same time as they roll against the races, are displaced along the races in the radial direction thereof.

,In the. embodiment shown in Figs. 3 and 4 the inner bisecting member 29a substantially has the shape of a double'convex lens, and the inner spherical surfaces 1a, [0a on the joint members are concave. For eachjoint member the centres 8a,;and I la respectively is on the opposite side of the transverse central plane (IV-IV in Fig. 3) as theappertaining spherical surfaces 6a, la and 9a, Illa respectively.

'The outer bisecting member lfia is slightly different from that shown in Figs. 1 and 2 but functions in the same way.

The embodiment shown in Figs. 5 and 6 is similar to that shown in Figs. 3 and 4. Means are, however, provided to prevent displacement of the rollers along the races in the radial direction. In the outer bisecting member I6?) is disposed a radially displaceable ring 33, in which the rollers 5b are mounted in a peripheral groove 34. In a peripheral groove 32b in the inner bisecting member 29b is mounted another ring 35 which is also movable in the radial direction and with which the rollers engage with their inner ends. When the joint members are deflected relatively to each other the bisecting members are displaced in the radial direction relatively to the rings 33, 35 so that the rollers roll between the races without displacement in the radial direction. In this case, in order to enable the ring 35 to be inserted, also the inner bisecting mem-.

the other when the joint is put together: The: various details may of course. be combinediwitheach other in various ways without it being'considered necessary to describe these possibilities in detail. Instead of the spherical surfaces (for ex'-- ample 26, 21 in Figs. 1 and 2) it is possible to use for example conical surfaces. or other surfaces providing only a line of contact.

What I claim is:

1. Universal joint comprising in combination a driving joint member, a driven joint member, arms .onthe joint members, raceson' the arms, rollingmembersbetween the races, an outer'oonvexsurface and an inner sphericalsurf-aceonthedriving joint member having a common centre-on the. axis of said driving joint member, an outer convex. and. an inner. spherical surface on the driven joint member havingacommon centre on the axis of said driven joint member. separate from. the corresponding. centre. for. the driving jointmember, anouter bisecting, member sur rounding the joint members. innertsurf-aces on the outer bisecting, member. by means. of, which itis mounted on the outer. convexsurfaceso-fthe.

mounted with their outer and inner ends respectively.

'7. Universal joint as claimed in claim 1 in which said rolling members are rollers, and comprising in addition a member displaceable in the outer bisecting member in the radial direction in which the rollers are mounted with their outer ends.,and a member displaceable in. the inner bisectingimemberin theradi'al direction in which the rollers are mounted'with their inner ends.

8. Universal joint as claimed in claim 7 in which an inner peripheral groove is provided in themember movable in the outer bisecting memberin which the rollers are mounted with their outerendaiandthe' inner bisecting member and v the memberimovably mounted therein form a groove in. which the rollers are mounted with jointmembers, an inner. substantially lenticul'ar bisecting member. mounted within the. joint, and. outer spherical. surfaces. on theinner bisecti'n member. complementary to and. seated. against said inner sphericalsurfaces. on the joint. mem

here, said rolling members being. be: tween and journalled on the. outerand innerbb seating members.

2;.Universal. joint as.v claimed. in claime 11in which the inner bisecting member: substantially has the. shape of .a double concave lens.

3. Universal joint. as claimed. in claim 11in which the inner bisecting member substantially hasthe shape cfadouble convex lens.

4. Universal. joint" as claimed .in claim. 1.. in which the said centres are symmetricallyranranged on each side of and. in relation the their. inner ends.

'9 Universal joint as claimed in claim 1 in which the inner bisecting' member substantially has. the. shape of a double convex lens, the said centres are: symmetrically arranged. on each. side o'fiandiin relation to. thetransverse centralLplane of the jointlthe outer: convexsurface on the;driving joint. member has the same radius as, the outer-convex-surfaceon the drivenjoint member, the inner spherical'surfaceon the driving, joint member has-the. same'radius as the inner spherical surface on the; driven, joint member, and, peripheral grooves are provided. in the outer and thajnner hisectingmembers. in which. the rollers are mounted with their: outer and inner. ends" respectively;

10;. Universal. joint. as claimed in claim 1'. in which theirmer bisecting; member substantially hasthei shape. of an double. convex; lens, the said centres. are symmetrically arranged on, each. side of: andin relationto the'transversacentral plane ofith'ei joint*,..the.outer. convex surface. on the driving' jointi, member: has. the. same. radius asthe outer: convexsurface onrthe driven joint member; theinnersphericaLsurtace. on. the driving joint member has the same. radius as the inner. spherical. surface on. the :dr-ivenv jointmember, an. annularzmemberis; mounted inthe outer spherical bisectingimemberi'sosas. tobedisplaceable therein imthe. radialdirection, saidannular member.hav ingan inner. peripheral groove in which therollers. are mounted! with their outer ends. and an annulanmemberis mounted inthe inner. bisecting member so:to.bedisplacabletherein.in the radialdirection, said annular member with the inner bisecting member. formingv a peripheral groovein. which. the. rollers" are mounted with their: inner ends.

SVEN'GUSTAF WINGQUIST;

References. Cited! in. the: file of this patent UNITED STATES PATENTS Number. Name; Date 2,051,248 Aug 18g 1936 2,286,182 Amberg June 16,1942

FOREIGN PATENTS Number. Country. Date 566301 Great Britain 1944 

